Remote Full-Stack Developer - SPA & API (Contract)

Doist; Mesa (AZ); On-site; USD 120,000 - 160,000; Part time

Job summary

Koantek is seeking multiple experienced Full Stack Application Developer to design and build modern, production-ready applications and user experiences.

This contract role requires strong hands-on experience with SPAs, scalable backend services, APIs, and PostgreSQL, along with collaboration across data engineers, platform engineers, architects, and product stakeholders to translate business needs into working software.

Qualifications

• Must have extensive experience in full-stack development for production-grade applications.
• Proven ability to design and deliver SPAs using React, Angular, or similar frameworks.
• Strong skills building backend services and REST APIs with FastAPI, Flask, or Node.js.
• Solid relational database experience, with PostgreSQL emphasis and performance considerations.
• Knowledge of modern web architecture, API integration, authentication, security, testing, and deployment.
• Ability to own features end-to-end from concept to production.

Responsibilities

• Design, develop, and deploy modern SPAs using React, Angular, or similar frameworks.
• Build scalable backend services and REST APIs with FastAPI, Flask, Node.js or equivalent.
• Design and integrate applications with PostgreSQL and other relational databases.
• Collaborate with data/platform engineers, architects and stakeholders to translate requirements.
• Drive technical decisions, write clean, tested code, and uphold engineering standards.

Skills

Full-stack development

React/Angular

Backend APIs

PostgreSQL

Web architecture

Autonomy

Job description

Koantek is seeking multiple experienced Full Stack Application Developer to design and build modern, production-ready applications and user experiences.

This contract role requires strong hands-on experience with SPAs, scalable backend services, APIs, and PostgreSQL, along with collaboration across data engineers, platform engineers, architects, and product stakeholders to translate business needs into working software.